A robot on wheels isn’t exactly the most exciting thing in the world, but the Sand Flea by Boston Dynamics has a very neat trick up its mechanical sleeve: it is capable of jumping a full thirty feet in the air from an absolute standstill.

Anyone planning on illegally crossing the North/South Korean border better think twice, the government has deployed a couple sentry robots that can sense heat and motion and deploy 40mm grenades at the target, or just fire off a couple thousand rounds of ammunition its way. Audio and video is sent back to the command center allowing them to make the call on whether or not the response requires such offensive action. Check the video below for a peak at the command UI.